Browserstack offers up to 60 minutes of free browser testing using a virtual machine from within your browser and no additional software is required.

It provides access to real browsers including all versions of Internet Explorer running on Windows, although other operating systems will be available soon.

The browser can be run in full screen mode which allows you to view the remote browser in a larger view or zoom to fit which scales the remote browser size to fit your current view area, so as to avoid scrolling.

Java, Flash, Silverlight, Shockwave, Acrobat Reader and Quicktime are installed on the virtual machine and the ability to disable these plugins from the browser settings is provided.